code: def test_str_accessor_removeprefix_removesuffix(df_ddf, method):
      df, ddf = df_ddf
      prefix = df.str_col.iloc[0][:2]
      suffix = df.str_col.iloc[0][-2:]
      missing = "definitely a missing prefix/suffix"
  
      def call(df, arg):
          return getattr(df.str_col.str, method)(arg)
  
      assert_eq(call(ddf, prefix), call(df, prefix))
      assert_eq(call(ddf, suffix), call(df, suffix))
      assert_eq(call(ddf, missing), call(df, missing))
  
imports: from __future__ import annotations
  import contextlib
  import numpy
  import pytest
  import dask.dataframe
  from dask.dataframe._compat import PANDAS_GE_140, PANDAS_GE_210
  from dask.dataframe._pyarrow import to_pyarrow_string
  from dask.dataframe.utils import assert_eq, pyarrow_strings_enabled
label_desc: Use image node_id 11 for calling a global function with example usage: test_str_accessor_removeprefix_removesuffix(df_ddf, method) and returns: getattr